Use pointers

.gitignore

@@ -1,2 +1,3 @@
 TypoML
 src.bin
+typoml

src/main.odin

@@ -10,7 +10,7 @@ read_stdin :: proc() -> []string {
 	return strings.split_lines(content)
 }
 
-print_token :: proc(token: Token, depth: int = 0) {
+print_token :: proc(token: ^Token, depth: int = 0) {
 	indent := strings.repeat("    ", depth, context.temp_allocator)
 
 	type_str := ""
@@ -56,5 +56,5 @@ print_token :: proc(token: Token, depth: int = 0) {
 main :: proc() {
 	lines := read_stdin()
 	parsed := parse(lines)
-	print_token(parsed)
+	print_token(&parsed)
 }

src/parser.odin

@@ -21,16 +21,15 @@ TokenValue :: union {
 Token :: struct {
 	type:     TokenType,
 	value:    TokenValue,
-	children: [dynamic]Token,
+	children: [dynamic]^Token,
 	parent:   ^Token,
 }
 
-replace_text :: proc(text: string, start: int, len_: int, repl: string) -> string {
-	builder := strings.builder_make(context.temp_allocator)
-	strings.write_string(&builder, text[:start])
-	strings.write_string(&builder, repl)
-	strings.write_string(&builder, text[start + len_:])
-	return strings.to_string(builder)
+push_token :: proc(parent: ^Token, type: TokenType, value: TokenValue = nil) -> ^Token {
+	token := new(Token)
+	token^ = Token{type, value, nil, parent}
+	append(&parent.children, token)
+	return token
 }
 
 parse_header :: proc(line: string) -> (int, string) {
@@ -57,13 +56,7 @@ parse :: proc(lines: []string, allocator := context.allocator) -> Token {
 
 		if len(line) == 0 {
 			if line_index != len(lines) - 1 {
-				current_token = &root
-
-				append(
-					&current_token.children,
-					Token{TokenType.Paragraph, nil, nil, current_token},
-				)
-				current_token = &current_token.children[len(current_token.children) - 1]
+				current_token = push_token(&root, TokenType.Paragraph, nil)
 				continue
 			} else {
 				continue
@@ -72,37 +65,24 @@ parse :: proc(lines: []string, allocator := context.allocator) -> Token {
 
 		header_level, text := parse_header(line)
 		if header_level > 0 {
-			if current_token.parent != nil {
-				current_token = current_token.parent
-			}
-
-			append(
-				&current_token.children,
-				Token{TokenType.Header, header_level, nil, current_token},
-			)
-			current_token = &current_token.children[len(current_token.children) - 1]
-			append(&current_token.children, Token{TokenType.Text, text, nil, current_token})
-			current_token = current_token.parent
+			current_token = push_token(&root, TokenType.Header, header_level)
+			push_token(current_token, TokenType.Text, text)
+			current_token = &root
 			continue
 		}
 
-		if text[0:2] == "> " {
+		if strings.has_prefix(text, "> ") {
 			if current_token.type != TokenType.Blockquote {
-				append(
-					&current_token.children,
-					Token{TokenType.Blockquote, nil, nil, current_token},
-				)
-				current_token = &current_token.children[len(current_token.children) - 1]
+				current_token = push_token(&root, TokenType.Blockquote, nil)
 			}
-			append(&current_token.children, Token{TokenType.Text, text[2:], nil, current_token})
+			push_token(current_token, TokenType.Text, text[2:])
 			continue
 		}
 
 		// LAST-CASE SCENARIO: NORMAL TEXT
 
 		if current_token.parent == nil {
-			append(&current_token.children, Token{TokenType.Paragraph, nil, nil, current_token})
-			current_token = &current_token.children[len(current_token.children) - 1]
+			current_token = push_token(&root, TokenType.Paragraph, nil)
 		}
 
 		#partial switch current_token.parent.type {
@@ -110,7 +90,7 @@ parse :: proc(lines: []string, allocator := context.allocator) -> Token {
 			current_token = current_token.parent
 		}
 
-		append(&current_token.children, Token{TokenType.Text, line, nil, current_token})
+		push_token(current_token, TokenType.Text, line)
 	}
 
 	return root